What's the sort name for a nested class?
Update to reflect recent C++ standardization efforts.
change trait for enumerations to use long instead of int as basis.
Syntax and semantics to specify enough so can
write derived classes without looking at code (with Clyde Ruby).
Specifying pattern of recursion for subclasses with spec of member functions.
Way to specify a class that has an open vs. a closed specification.
Gary T. Leavens